Crack sealer for concrete pavements



Jan. 3, 1933. QVV D 1,893,082

CRACK SEALER FOR CONCRETE PAVEMENTS Filed July 24, 1929 2 4 27 I2INVENTOR o E.T. HOWARD TTORNEYS Fatented Jan. 1%, 1933 are.

EARL T. I-IOWARD OF FULLERTON, CALIFORNIA, ASSIGNOE OF ONE-HALF TO AGNESRUTH l-IONABD, OF FULLEETON, CALZFOR-NIA CRACK SEALER FOR CON PAVEM'FNTSApplication filed July 24,

My invention pertains to a crack sealer for concrete pavements, tosealcracks in the pavement by injecting a liquid oil or other plasticsubstance which will flow into the crack.

An object of my invention is the construction of a hand operatedimplement which may be drawn by the operator along a crack and having aguide means to follow the crack in concrete pavements, so that thefiller will flow into the crack and in which the flow may be controlledand thus preventing the oils or other plastic substance from spreadingon the surface of the pavement. My invention may be applied to. crackswhich form in a finished pavement, or may be employed for inserting afiller in the expansion joints.

In this type of work in the prior practice, the oil or plastic materialhas overflowed the crack, forming a coating on the surface of thepavement, which coating forms a slightly raised surface on the pavement.This is particularly no iceable in the prior practice of fillingexpansion joints and gives vehicles a series of bumps when driving overpavement in which the cracks have been filled in the manner of the priorpractice.

A further object of my invention and as exemplified in my device, is theuse of a container for the plastic or liquid material, which is mountedon a handle and has a valve, the valve being readily actuated from thehandle. At the bottom of the container or receptacle there is adischarge outlet or orifice which has a guide device which follows thecrack or groove in the pavement. Therefore the operator may place thisguide device in the crack and then by drawing or pulling the handle maypartly slide the implement along the pavement, this following the crackand immediately feeding the liquid or plastic material into the crack,con- M trolling the flow so that it does not overflow the crack orspread on the surface of the 1929. Serial No. 380,683.

pavement. In one type of structure I prefer to mount the receptacle orcontainer on wheels. This is particularly useful for filling expansionjoints in concrete pavements.

My invention is illustrated in the accompanying drawing, in which,

Figure 1 is an elevation of my invention taken in the direction of thearrow 1 of Fig. 2;

Fig. tion of the arrow 2 of Fig. 1, partly broken away;

Fig. 3 is a detail vertical section through the lower part of thereceptacle in the valve, showing the valve closed;

Fig. 4 is a view similar to Fig. 3, with the valve open;

Fig. 5 is an elevation taken in the direction of the arrow 5 of Fig. 6,being a modified construction of mounting the tool;

Fig. 6 is an elevation taken in the direction of the arrow 6 of Fig. 5.

My invention has the following main elements, these being a receptacle11, having a discharge tip 12, a valve 13 connected with N the tip. Ahandle 14; is used to support the receptacle by means of the yoke 15.The valve has a valve stem 16 operating through a guide 17 on the top ofthe receptacle having an offset portion 18 with a hand grip end 19extending alongside of the handle. The handle is preferably circular incross section at the upper part 20 and square in cross section at thelower part 21.

In detail the discharge tip 12 has a conical outside lower surface 22with a squared lower end 25 through which there is the nozzle 26. Aslight prong or projection 27 is utilized to form a guide to follow thecrack or groove in the pavement. This is preferably made of stcelite orother hard material. The tip shown with a slight cylindrical section 28,an annular shoulder 29 and an upwardly extending section 30: this latterforming a housing for the valve. This valve 2 is an elevation taken. inthe direcstructure has a valve seat 31 communicating with the nozzle 26,an inlet chamber 32 with a lateral Opening 33 through the side of theupward extension 30. A bore 34 leads to the top of the extension to theinlet chamber 32 and accommodates the lower part of the valve stem, thisstem having a plug section 35, bearing or; the seat 31 (noteparticularly Figs. 3 and 4 The guide 17 is preferably supported on apartial cover 36 which extends upwardly and inwardly from the rim 37 atthe top of the receptacle 11. This receptacle is preferably made conicalwith the apex down and has a lower rim 38 which bears on the shoulder 28and is preferably welded thereto. The upper portion 18 of the stempasses through a guide bracket 39 mounted on the handle and acompression spring 40 engaging between this bracket and the pin il'onthe stem functions to force the stem-downwardly, to normally maintainthe valve closed.

he construction of Figs. 1 and 2 is-particularly adapted for use withirregular cracks. The device is operated by inserting the lower end inthe crack so that the prong 15 fits therein andby drawing the device atan inclination, the nozzle follows the crack. The hot oil or otherplastic material placed in the receptacle may be gradually ted by theoperator by controlling the valve, this being done by liftingon thehandle end 19 and again allowing the stem to drop to the action of thespring 40 to shut off the supply.

Thus the operator may accurately gauge the amount of oil or plasticfiller flowing into the crack.

The construction of Figs. 5, and 6 is preferably used for fillingexpansion cracks in concrete pavement. In this case they have brackets.42 secured adjacent the lower part of the tacle having the apex downwith the lower end secured to the tip, a yoke connected to the upper endof the receptacleand having a handl in axial alignment with thereceptacle, a valve connected to the tip, a slidable stem, to operatethe valve,extending upwardly through the said receptacle and having an 7extension along the handle with means on the stem adjacent the handle tooperate the stem of thevalve. r p 3. A crack sealer, comprising incombination a metal discharge tip having a nozzlev therethrough, aconical shaped receptacle having the apex down and connected to the tip,a yoke connected to the upper end of the receptacle, a handle attachedto the yoke and 'inaxial alignment with the receptacle, a valveconnected to the tip, an opening in the receptacle, a slidable stem tooperatethe valve, aguide means for the stem connected to the receptacle,an extension of the stem along the handle, whereby the stem may beoperated to control the valve from a position adjacent the handle.

In testimony whereof I name to this specification.

EARL T; HOWARD. f

have signed; my

receptacle and these have caster wheels 43,

there'being a wheel on opposite sides of the nozzle 36. This allows useof a larger con tainer without being troublesome for the;

operator to handle, the operation being sub stantially thesamej Theprong 27 forms a guide to follow the crack or joint of the pavement.

Various changes may be made in the principles of my invention withoutdeparting from the spirit'thereot as set forth in the description,drawing and claims.

I claim 1. A crack sealer, comprising in cornbina- I tion a metaldischarge tip having a vertical nozzle therethrouglnwitha prong on oneside to follow a crack, a conical-shaped receptacle having the apexdownand with the lower end secured to the tip, a yoke connected to theupper end of the receptacle and having a handle in axial alignment withthe receptacle, the tip having an upward extension in the receptaclewith a valve constructed therein, having a lateral opening to thereceptacle,

